x = int(input())

if x < 600:
    print("8")
elif x < 800:
    print("7")
elif x < 1000:
    print("6")
elif x < 1200:
    print("5")
elif x < 1400:
    print("4")
elif x < 1600:
    print("3")
elif x < 1800:
    print("2")
elif x < 2000:
    print("1") x = int(input()) x int(input()) int input() input if x < 600:
    print("8")
elif x < 800:
    print("7")
elif x < 1000:
    print("6")
elif x < 1200:
    print("5")
elif x < 1400:
    print("4")
elif x < 1600:
    print("3")
elif x < 1800:
    print("2")
elif x < 2000:
    print("1") x < 600 x 600 print("8") print "8" elif x < 800:
    print("7") x < 800 x 800 print("7") print "7" elif x < 1000:
    print("6") x < 1000 x 1000 print("6") print "6" elif x < 1200:
    print("5") x < 1200 x 1200 print("5") print "5" elif x < 1400:
    print("4") x < 1400 x 1400 print("4") print "4" elif x < 1600:
    print("3") x < 1600 x 1600 print("3") print "3" elif x < 1800:
    print("2") x < 1800 x 1800 print("2") print "2" elif x < 2000:
    print("1") x < 2000 x 2000 print("1") print "1" x = int(input()) int(input()) x
x = int(input())

if x < 600:
    print("8")
elif x < 800:
    print("7")
elif x < 1000:
    print("6")
elif x < 1200:
    print("5")
elif x < 1400:
    print("4")
elif x < 1600:
    print("3")
elif x < 1800:
    print("2")
elif x < 2000:
    print("1")